The main role of thermal annealing in controlling the structural and optical properties of ITO thin film layer

Ahmed, Moustafa; Bakry, Ahmed; Qasem, Ammar; Dalir, Hamed

doi:10.1016/j.optmat.2021.110866

Cited by 68 publications

(32 citation statements)

References 89 publications

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“…The crystalline quality of the films can also be studied by calculating the size of the crystallites of the films using the Debye-Scherrer equation [32,33] (Eq. 1).…”

Section: Crystal Phasementioning

confidence: 99%

Effect of the hole transporting layers on the inverted perovskite solar cells

Mehdi

Matheron

Mhamdi

et al. 2021

J Mater Sci: Mater Electron

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Organic-inorganic hybrid perovskite solar cells have become one of the most promising photovoltaic technologies with conversion efficiency exceeding 25%. Increasing the efficiency of the perovskite solar cells is one of the most important challenges in the photovoltaic domain. The development of good hole transport layers (HTLs) is crucial for high-performance perovskite-based photovoltaic systems. Furthermore, it is important to accurately optimize the energy level matching between perovskites and hole transport materials via better charge collection. This work explores the effect of the HTLs on the growth process, morphology and crystallinity of the perovskite active layer and their impacts on the photovoltaic performance. Devices with planar inverted architecture ITO/ HTL/MAPbI 3-x Cl x /PC 60 BM/BCP/Ag were fabricated using a one-step deposition method. The effects of the use of various HTL materials and the effect of the thermal annealing treatment of this layer were investigated. Morphological and microstructural analyzes of the perovskite films were carried out by scanning electron microscopy, X-ray diffraction. The optical properties in particular the absorption and the recombination process were studied by UV-vis absorption spectroscopy and photoluminescence spectroscopy. The photoelectric properties were investigated by photocurrent-voltage characteristic curves.

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“…The crystalline quality of the films can also be studied by calculating the size of the crystallites of the films using the Debye-Scherrer equation [32,33] (Eq. 1).…”

Section: Crystal Phasementioning

confidence: 99%

Effect of the hole transporting layers on the inverted perovskite solar cells

Mehdi

Matheron

Mhamdi

et al. 2021

J Mater Sci: Mater Electron

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“…The light output power and LEE of an LED device can be affected by the transmittance of the window layer. ITO window layer exhibits a lower transmittance in UV region as compared with MIPEMOCVD-grown GZO window layer (black line in Figure 7) owing to the strong absorption in UV region [38,51]. The carrier concentrations of n-ZnO and p-GaN were about 10 18 cm −3 ; therefore, the width of the depletion region in n-ZnO and p-GaN is almost equal.…”

Section: Resultsmentioning

confidence: 96%

Using Modified-Intake Plasma-Enhanced Metal–Organic Chemical Vapor Deposition System to Grow Gallium Doped Zinc Oxide

et al. 2021

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We have used a modified-intake plasma-enhanced metal–organic chemical vapor deposition (MIPEMOCVD) system to fabricate gallium-doped zinc oxide (GZO) thin films with varied Ga content. The MIPEMOCVD system contains a modified intake system of a mixed tank and a spraying terminal to deliver the metal–organic (MO) precursors and a radio-frequency (RF) system parallel to the substrate normal, which can achieve a uniform distribution of organic precursors in the reaction chamber and reduce the bombardment damage. We examined the substitute and interstitial mechanisms of Ga atoms in zinc oxide (ZnO) matrix in MIPEMOCVD-grown GZO thin films through crystalline analyses and Hall measurements. The optimal Ga content of MIPEMOCVD-grown GZO thin film is 3.01 at%, which shows the highest conductivity and transmittance. Finally, the optimal MIPEMOCVD-grown GZO thin film was applied to n-ZnO/p-GaN LED as a window layer. As compared with the indium–tin–oxide (ITO) window layer, the n-ZnO/p-GaN LED with the MIPEMOCVD-grown GZO window layer of the rougher surface and higher transmittance at near UV range exhibits an enhanced light output power owing to the improved light extraction efficiency (LEE).

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“…The electrical properties of the TRGO thin film at various temperatures were measured using the four-point-probe (4PP) method [37,38]. The sheet resistance (R s ) measurement was determined using Equation ( 3)…”

Section: Electric Studiesmentioning

confidence: 99%

Impact of Thermally Reducing Temperature on Graphene Oxide Thin Films and Microsupercapacitor Performance

et al. 2022

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In this work, a thermally reduced graphene oxide (TRGO) thin film on microscopic glass was prepared using spray coating and atmospheric pressure chemical vapour deposition. The structure of TRGO was analysed using X-ray diffraction (XRD) spectroscopy, scanning electron microscope (SEM), energy-dispersive X-ray spectroscopy (EDS), Fourier transform infrared (FTIR) spectroscopy, and ultraviolet–visible spectroscopy (UV-Vis) suggesting a decrease in oxygen functional groups (OFGs), leading to the restacking, change in colour, and transparency of the graphene sheets. Raman spectrum deconvolution detailed the film’s parameters, such as the crystallite size, degree of defect, degree of amorphousness, and type of defect. The electrochemical performance of the microsupercapacitor (µ-SC) showed a rectangular cyclic voltammetry shape, which was maintained at a high scan rate, revealing phenomenal electric double-layer capacitor (EDLC) behaviour. The power law and Trasatti’s analysis indicated that low-temperature TRGO µ-SC is dominated by diffusion-controlled behaviour, while higher temperature TRGO µ-SC is dominated by surface-controlled behaviour.

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The main role of thermal annealing in controlling the structural and optical properties of ITO thin film layer

Cited by 68 publications

References 89 publications

Effect of the hole transporting layers on the inverted perovskite solar cells

Effect of the hole transporting layers on the inverted perovskite solar cells

Using Modified-Intake Plasma-Enhanced Metal–Organic Chemical Vapor Deposition System to Grow Gallium Doped Zinc Oxide

Impact of Thermally Reducing Temperature on Graphene Oxide Thin Films and Microsupercapacitor Performance

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